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Search for Invisible Decays of the Υ(1S)

Aubert, B. et al. (2009) Search for Invisible Decays of the Υ(1S). Physical Review Letters, 103 (25). p. 251801. ISSN 0031-9007

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We search for invisible decays of the Υ(1S) meson using a sample of 91.4×106 Υ(3S) mesons collected at the BABAR/PEP-II B factory. We select events containing the decay Υ(3S)→π+π-Υ(1S) and search for evidence of an undetectable Υ(1S) decay recoiling against the dipion system. We set an upper limit on the branching fraction B(Υ(1S)→invisible)<3.0×10-4 at the 90% confidence level.

Item Type: Article
Subjects: Q Science > QC Physics
Schools: School of Applied Sciences
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Depositing User: Sharon Beastall
Date Deposited: 04 Jan 2012 10:41
Last Modified: 28 Aug 2021 11:12


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